Home / 639,191,037.70-881,832,656.73-371,221,253.83

Finding the Fourth Proportional to 639,191,037.70, 881,832,656.73 and 371,221,253.83

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Solution

The fourth proportional to 639,191,037.70, 881,832,656.73 and 371,221,253.83 is: 512,139,572.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,191,037.70 : 881,832,656.73 = 371,221,253.83 : x
  2. Step 2: Convert to fraction form
    639,191,037.70/881,832,656.73 = 371,221,253.83/x
  3. Step 3: Cross multiply
    639,191,037.70x = 881,832,656.73 × 371,221,253.83
  4. Step 4: Simplify right side
    639,191,037.70x = 327,355,024,499,550,592
  5. Step 5: Solve for x
    x = 327,355,024,499,550,592/639,191,037.70
  6. Step 6: Final answer
    x = 512,139,572.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.